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Device for Implementing a Compiler Pre-chargeable Cache

Publishing Venue

Abstract

Disclosed is a pre-chargeable cache device that enhances the performance of multitasking computer systems that use cache memory.

Country

United States

Language

English (United States)

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Device for Implementing a Compiler Pre-chargeable Cache

Disclosed is a pre-chargeable cache device that enhances the
performance of multitasking computer systems that use cache memory.

Traditionally, programs start at slow speed because the
cache must become charged with memory contents as the program executes. The disclosed device allows an
optimizing compiler to specify the pre-charge values stored in cache memory so
that a program can start running at full speed without waiting for the cache to
charge.

The disclosed device (see Figure 1) uses auxiliary or swap
memory with Task Associative Cache to enable the operating system to pre-load
the swap memory with pre-charge information specified by the compiler for the
task’s cache. Without the disclosed device, the cache would be empty at the
start of program execution. The specified device operates the same as a normal
Task Associative Cache after starting until the task is terminated.

Pre-charged
Cache used with Task Associative Cache provides higher program and system
performance for microprocessors while enhancing performance over conventional
cache.